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A hydroplane (or hydro, or thunderboat) is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy. A key aspect of hydroplanes is that they use the water they are on for lift rather than buoyancy, as well as for propulsion and steering : when travelling at ...
US Navy SWCCs train with a modified go-fast boat during a training exercise in Mississippi. A typical go-fast is laid-up using a combination of fibreglass, kevlar and carbon fibre, using a deep "V" style offshore racing hull ranging from 6.1 to 15.2 metres (20 to 50 ft) long, narrow in beam, and equipped with two or more powerful engines, often totalling more than 750 kilowatts (1,000 hp).
Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well. When hull speed is exceeded, a vessel in displacement mode ...
Crusader was a jet-powered speed boat piloted by John Cobb. The combination of an aerodynamically stable hull form and turbojet propulsion was proposed by Reid Railton, Cobb's adviser. A rocket-powered scale model was tested at Haslar. The full size design was by Peter du Cane and built by Vospers of Portsmouth.
Royal Navy World War II motor torpedo boat planing at speed on calm water showing its hard chine hull - note how most of the forepart of the boat is out of the water. At rest, a vessel's weight is borne entirely by the buoyant force. Every hull acts as a displacement hull at low speeds: the buoyant force is mainly responsible for supporting the ...
A high-speed craft (HSC) is a high-speed water vessel for civilian use, also called a fastcraft or fast ferry. The first high-speed craft were often hydrofoils or hovercraft , but in the 1990s catamaran and monohull designs become more popular.
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Hydrofoil high-speed boat Meteor on Lake Ladoga, Russia. Passenger hydrofoil Flying Dolphin Zeus moving at high speed near Piraeus, Greece. Meteor service between Saint Petersburg, Russia and the Kronstadt, a strongly fortified Russian seaport town, located on Kotlin Island, near the head of the Gulf of Finland. It lies thirty kilometers west ...